Week 4-1D Element Creation Challenge

AIM: To create 1D elements on the given component with given cross-section and DOF using Hypermesh

SPECIFICATION:

a. Rod element:- with only translational DOF and RBE2 link
Cross-Section: BOX- Dimension a= 12 mm
dimension b=10 mm
Thickness t= 0.75 mm

b. Beam element:- with all DOF and RBE3 link
Cross-Section: I Section- Dimension a= 8 mm
Dimension b= 10 mm
Dimension c= 8.5 mm
Thickness t1= 0.75 mm
Thickness t2= .6 mm
Thickness t3= .6 mm.

c. Bar element:- with only x and y DOFs With RBE3 link
Cross-section: CROSS section- Dimension DIM1= 5 mm
Thickness DIM2= 1.2 mm
Dimension DIM3= 10 mm
Thickness DIM4= 1.2mm

d. & e. apply the mass of magnitude 10 with RBE2 link

f. Join the two components with Spring elements .

PROCEDURE:

I. Importing the geometry

Import the geometry into the workspace and delete the wireframe.

II. Creating the mid surface for the given component

Step 1:- Select the component and create a mid surface for the top component (bracket 1) by making it current selection.

Step 2:- Select the component and create a mid surface for the bottom component (bracket 2) by making its current selection.

III. Meshing the component

Step 1:- To mesh the given component, we need to create washer splits near the hole region for a smooth mesh. The washer split offset we selected is 5mm.

Step 2:- Generate the mesh with an element size as 5mm with mixed element type.

IV. Create Material

We select steel as the material for this componentI. Create Material We select steel as the material for this component

V. Creating the properties

Serial Nos. Property name Card ID
1 Bracket_1 PSHELL
2 Bracket_2 PSHELL
3 Bar PBAR
4 Rod PROD
5 Beam PBEAM
6 Mass PMASS

VI. Create the 1D element on the rigid

Step 1:- Creating the rod, bar and beam 1D elements at the respective node points.

Step 2:- Update the 1D element with respect to their property

2-D element detailed representation:

Create the rigid at points a,b,c & d

Create the RBE2 and RBE3 at the respective holes with the given DOF.

Conclusion

• Extracted the mid-surface for the given component and Created a Mesh on the mid-surface
• Deployed suitable 1D Element ( RBE2, RBE3, ROD, BAR, BEAM , MASS, SPRING etc ) to the respective places.
• Assigned Cross-section and property to the 1D elements
• Created Solid representations of 1D Element.